Fuel saver for engines



' Feb. 8, 1938. F. NEILSON I FUEL SAVER FOR ENGINES Filed June 17, 1935 r0 R s 4 a. ,6 ND m 2 /,.3 m o 23 W FIG.

, FIG

v as IN Frank Neil.

BY fifl w Patented Feb. 8, 1938 PATENT OFFICE FUEL'SAVER FOR ENGINES,

Frank Neilson, New York, N. Y. Y

invention relatesto fuel mixers and more particularly to a device to.be associated with the intake manifold ofaninternal combustion eng'ine for the'purposeof mixing avolume' of air wit'hthecharge coming-from the engines car- Another object is. to provide a fuel saver, as

:heretofore described, which'lwill efllciently preheat the air before it mixes with the charge from the'carburetor. L m

Still another object, and an important one, is toi'so;1ead the air stream thatthe operating portions of the device willnot become clogged by iforeign' matter norwm they be apt to. become (rusted or corroded.

J Another object is to providea valved'fuel saver I and :mixerlwhich will not allow'theescape ofrfuel 'cjharge'siinto'the atmosphere, yettwill permit an additioniof atmospheric air to the charge.

*-'*' 'Andther objectis to provide a device oflthis 5'kind which will operate to discharge two air streams'into the fuel charge as it comes from --the"carburetor, the discharge being such that the 1? additional air, will becomeiwell mixed with the f'uel charge. a F

Other jobjeets and advantages ofthe invention A will be apparent during the course of the followin'g'detafled description, taken inconnectionwith the accompanying drawing, forming a part of this-specification" and in which drawing:-

Figurel is a perspective view ofthenovel de- 1 vice "attached to an internal combustion'engine "between the carburetor and theintake manifold -thereof.; 1

Figure 2 is a vertical section through the novel device and associated portions ofthe carburetor sand intakemanifoldof an internal combustion "engine. l T

{Figure-3' is a view,-la'rgely in -horizon'tal section, -of th'e novel device withvalves, formingia por- -Fig'ure, 4 ,s a fragment of the novel device -showin'gone'of the valves; by way of example,

"tion" of the construction, closed; r

fifopen; and I v 1 Figure 5 is asectional view substantially on the z 3 line 55 of Figure 3.

lustration isshown a preferred embodiment of 7 the invention and wherein similar reference characters designate corresponding parts throughout the several views, the letter A desigthe outlets of the passageways 26. f noted that there is provided a relatively long passageway formed by this L-shape, much longer than a passageway which might extend in a I Inthe drawmgwherein for the purpose of i1-' straight'line radially from the chamber 25. By

Application June 11, 1935," Serial No. 27,086 1' Claim. (01. 251-145 natesz generally an" apparatus making use of a fuel charge, such as an internal combustion enan internalcombustion engine having an intake manifold l0 provided with a charge intake passageway II, the mouth I2 of the passageway 3 beingsurrounded by a flange l3 having perforations-4M, all the foregoing being conventional construction. a r-Usually the charge forming device B, shown as a conventional carburetor, has a passageway l5 for the chargeafter'it is formed, the passageway ending :in an outletmouth I6 surrounded by a flange I! provided with perforations l8, co-axial with the perforati'ons I4 so that, ordinarily, the

flanges I3 and I! may be coupled togethenas by screwsl9. m

."Ihe novel fuel saver C is adapted to be interposed between these two flanges l3 and I1, and includes a body portion 20, preferably relatively thin and having opposite flat faces 2| and 22 and an outer face 23 preferably conforming to the contour of the outer faces of the flanges l3' and I1, thus providing a gasket-like structure.

It is preferred that this body portion be of heat conducting metal and the bodyportion may be integral although it is apparent it may be formed of, two half sections joined together longitudinally.

, The body portion 20 is provided with a suitable number of perforations 24, co-axial with the perforations I4 and'l8' when the body portion is interposed between theflanges l3 and I1 as stated. Furthermore, the body portion 20 i has a central bore or chamber 25, of substantially thesame circumference as the circumferencesof the passageways H and i5. Extending from the outer face 23 of the body portion 20 to the chamber'25 are, preferably, two substantially L-shaped passageways'or conduits 26 and the mouths 21 of the passageways 26 at I the face 23 may be termed the intakes of the passageways 26, while the mouths 28 of the passageways 26 at the chamber 25 may be termed It will be this construction, air or other gas flows through the L-shaped passageways and will be heated much more than air which will flow through the shorter or conventional passageways provided for gine, B amain charge forming device, such as a carburetor, and C the novel fuel mixer. For the purpose of illustration, A is shown-as devices of this kind. However, this desirable heating is not the" only reason for the specific shape of the passageways 26.

Preferably, the mouths 28 are tapered, as shown in Figure 3 and, inwardly of each of these mouths 28, is a valve seat 30 which may comprise a metallic disc having a central bore 3|. However, the seat 30 may be a split ring adapted to be sprung into place through the chamber 25 and-the tapering ,rnouths 28, the loody portion being suitably grooved for the purpose otaCpommodating the edge portions of the seat 33. This seat 30 may be said to face ber 25.

Extending from the face 23 of thebody-p'ortion 20 are perforations 32 co-axial with the,mouths 28 and ending at the passageways 26. In other words, the axes of the perforations-32am normal to the axes of a part of the passageways 26.

In addition to the valve seat 30 each valve .structureincludes a valveguide and. sleeve, comprising; an enlarged portion 33 snugly accommodated in the perforations J32 Land thaving a valve stem borei34eanda sleeve..portion34 Furthermore, .the 'valve .structure includes a valve stem 35slidably. extending throughtheboresSl and 34 and sleeve portion 3, theopposite or :outer endof the valvelste'm portionlprotruding from the facei23 ofuthebody portion '2fl,i:andhthis protruding end may bescrew .threadedand terminate in a head36. t V

The inner endtof each vlalveistemz 35 terminates in'ta yalve 13:], preferably somewhat cup-shaped and adapted to; seat on the :valvetseat 3I l, withthe convex face of the-valve :3l:.facing the chamber 25. A' follower -38-is radjustably threaded I upon the valve stem 35 ahdin'cludesa cylindrical portion 39 which extendsxabout aportion of the stem 35 and is screw threaded, and an enlarged head 40.- "I'he cylindrical portionv 39 of thezfollower 38 .is slidably accommodated within the t sleeve portionst l and this'sleeve portion also ackcommodatestan expansiontcoil spring 4| with one end of the latter bearing against thegface-of the base of the ;.sleeve portion/sandthezother end bearing against .the cylindrical portion 39. This arrangement normally forces the valve 31, to remain seated. So that the valve stem.35 will not rotate, it may 'be provided .with a laterally extending portion slidableithroughan opening 42 shown in Figure 5, which opening may extend :from the .baseeof the sleevepportion through the enlarged portion 33. to .thespassagewaysiii.

- Weldedor otherwise secured to (or forming a part of) eitherthe bodyiportionfifl or the valve housing are spring clips 45 .ofany approved construction,..for lremovably retaininggsuitable valve caps :46 forrprotecting the valve structures, asv is apparent inFigure 3. y; w

Gaskets 50 may be-provided, if desired,to be disposed between, each vface 2| ,and 22 ,and the adjacent faces of the flanges i3 and II, as is shownin Figure 2.

In the;use of thenovel fuel saver C, after the charge forming device ,3, such, as the conventional carburetor shown, -is uncoupled from the endofjtheintake manifold ill, the, novel ,fuel' saver-11s inserted with the gaskets 5.0,, and, all,

including, -thecarburetor, are tightly coupled together..

towards the cha n vheated air ;flowin'g from the opposite mouth 28,

willbe well baffled about so that a good mixture -is effected in the chamber 25 without the need of bafiles or the like. In fact baffles would be detrimental :when this mouth-facing-mouth arrangement is employed.

One factor that has seriously interferred with :thesuccessfuloperation of devices of this kind,

wherethe air is drawn in past and along the valve stem or stems for substantially their entire length,

:. has been .thatp grease oil,gmoisture and the like have also been :drawn:inand have lodged upon structure, .since ttheair does not flow along or about the springAlt and major portion-of the :valvestem 35. t I Thecaps' lli mayremainin it is desiredito adjust the tension of the, springs 24 I, whichimay'be doneby adjusting the positions place except when of the followers 38 along the valve stems 35 as is apparent; h

Various changes may. be :made to the form of j invention herein :shown and described, ,withoutdeparting from the spirit-of the invention orthe scope of the claim. j

What is .claimedLis:

to alcharge-pre-formed by a chargeeforming device and .adaptedsto beinterposed between the the valvelstructure (particularly the valve stem @andlspring) ordinarily associated therewith. By'

Y 1 In a'fuelsavenadapted to add'a volume ofgas' outlet ofrsaid charge-forming deviceand the inlet a of an intake manifoldof an internal combustion engine a gasket-likebody portion having Ya-centrally-disposed:chambertherethrough;with openings at bothiendsthereof, one opening adapted for communication with said charge forming det'viceand the other openingadapted for communication with said'intake manifold,'said bodypor- :ition-ialso :having a substantially L-shaped gas whollyvwithin said body porintake passageway,

tion, opening tothe outer atmosphere directly 7 .at the ,exterionof saidtbodyportion and extending tosaid, chamber, the. longitudinal axisrof that portion of saidgaspassageway; nearest said chamber being radially disposed with 'referenc'eto, the

- axis ,of saidu-,.chamber-,, a :valve structure carried by said body p'ortion, including-a seat withinsaid ,lportion of saidpassageway,disposed at the juncture of the two portions of said L-shaped passageway andrspacedirom-and-facing'said chamber, a valve normally on said seat and -a valve stem secured to said valve, extending :into said ,passageway and disposed with-its axisf substantiallyradial rwith reference to= the;axis of said chamber, and valve means urging seating iofsaid valve, including :a spring located wholly outside said gas intake passageway. 7 v

. a a I FRANK NEILSON. 

